Fig. 1From: Intra-articular osteoid osteoma as a differential diagnosis of diffuse mono-articular joint painDistribution of OO in 367 cases. a Most OO were localized within the diaphysis of the femur followed by tibia and vertebra. Intra-articular localization was only found in 19 (5.2 %) of the cases. Red boxes highlight the joints in which iaOO were found. Whole body scan obtained by dual-energy X-ray absorptiometry (DXA). b Age and gender distributionBack to article page